Transversal Propagation Behaviors of Helical Edge States In a QSH System

Details Transversal Propagation Behaviors of Helical Edge States In a QSH System Transversal Propagation Behaviors of Helical Edge States In a QSH System

2011-11-23

arxiv.org/abs/1111.5550v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

The transversal propagation of the edge states in a two-dimensional quantum spin Hall system are classified by decay characteristic quantity $\lambda$. Two different modes of the helical edge states exhibit distinct behaviors. The penetration depth is momentum dependent in normal edge states. The finite size gap decays monotonously with sample width, leading to the normal size effect. In contrast, the penetration depth maintains a uniform minimal value in the special edge states with much shorter length. The finite size gap decays non-monotonously with width, leading to the anomalous finite size effect. Real materials are compared in the phase diagram, which explicitly demonstrates their differences. We also propose an intuitive way to search the special edge states in two-dimensional quantum spin Hall system.

Affiliated with

Also associated with

No associations

Rating

Transversal Propagation Behaviors of Helical Edge States In a QSH System does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Transversal Propagation Behaviors of Helical Edge States In a QSH System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transversal Propagation Behaviors of Helical Edge States In a QSH System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-377780